JPH0322533B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an oil combustor that sucks up fuel through a wick and supplies it to a burner section, and that can appropriately extinguish the fire with a fire extinguishing device.

[Conventional technology]

As a fire extinguishing system for an oil combustor that sucks up fuel through the wick and supplies it to the burner, it can be used to stop the fuel supply to the burner by using a valve to block the fuel flow path while the wick is fixed, or to stop the fuel supply to the burner. The wick is stored in a wick container using a wick up/down device to stop the generation of petroleum gas vaporizing from the wick, or the upper part of the wick where a large amount of petroleum gas is vaporized is shut off to cut off the air supply. There is a way to extinguish the fire.

No matter what kind of fire extinguishing equipment is used, since it uses a wick, it is impossible to instantly stop the vaporization of the fuel while extinguishing the fire, but the amount of vaporization is gradually reduced to extinguish the fire. Automatic fire extinguishing systems with upper and lower wicks that directly shut off the upper part of the wick for about 10 seconds would cause the petroleum gas to continue to vaporize even if the flame was extinguished instantly, which caused a foul odor when the fire was extinguished.

In order to prevent this bad odor, those equipped with a fire extinguishing system that closes off the upper part of the wick use a sealed chamber and a spring to suck unburned petroleum gas around the wick into the sealed chamber in conjunction with the extinguishing operation. In addition, the structure in which this suction force is effective in shortening the fire extinguishing time is invented by the applicant, including Japanese Patent Application No. 51-64905, Japanese Patent Application Laid-open No. 48-2336,
It is publicly known in Japanese Patent Application Laid-Open No. 48-66239.

In addition, since the suction force stops in a short period of time with spring-based devices, the electric motor is driven at the same time as the fire extinguishing operation, and the fan pump continues suction for a long time.
No. 16028 etc. are publicly known.

[Problem to be solved by the invention]

By the way, a suction structure that uses a mechanical storage force such as a spring does not allow the unburned gas to escape, does not require a power source, and is suitable for oil burners that use a wick. Even if they are effective, they stop working and are no longer effective against the foul odor of petroleum gas that continues to vaporize after the fire is extinguished.

On the other hand, for those that use a suction pump operated by an electric motor, oil burners that use a wick, which is preferred for portability, share the power source of the ignition battery, and with this configuration, the ignition battery is used every two to three months. Needs to be replaced. Furthermore, oil combustors that use a wick can be ignited normally by removing the batteries and using a matchstick, so if an automatic fire extinguisher is used to instantly extinguish the fire under these conditions, unburned gas cannot be sucked in. The extinguishing time will be extremely long, which will not comply with Japanese Industrial Standards, and there is a risk that the product will be defective. Furthermore, the unburned gas that is sucked and released must be adsorbed by some method and released only as air.If the unburned gas is released into the room as it is, it will cause a bad odor, which will eventually occur after the fire is extinguished. There is still no perfect way to prevent the odor characteristic of oil burners that use wicks.

[Means to solve problems]

In view of the above-mentioned problems, the present invention relates to an oil burner using a wick that can remove almost all the bad odor generated after extinguishing a fire.
is projected from the core container 1 to the burner 3, and
In an oil combustor having a fire extinguishing device 4 such as a blocking mechanism 6 and a wick up/down mechanism 5, an air chamber 9 is provided that looks into the wick 2 of the wick container 1, and is installed near the burner 3. A sealed chamber 8 is provided in which the amount of air heated by the combustion heat and stored is varied depending on the combustion state, and the air chamber 9 and the sealed chamber 8 are communicated with each other by an air pipe 10. The structure is such that the air is sucked into the sealed chamber 8.

The sealed chamber 8, which is heated by the combustion heat of the burner 3 and changes the amount of stored air, is formed by a chamber with a fixed volume installed opposite the combustion part of the burner 3, and is heated by the combustion heat of the burner 3 when burning and extinguishing. The closed chamber 8 is heated and cooled.

In another embodiment, a temperature-sensitive deformable member 13 is mounted opposite to the combustion section of the burner 3, and the variable-volume sealed chamber 8 and the temperature-sensitive deformable member 13 are linked, so that the temperature-sensitive deformable member 13 is connected to the closed chamber 8. is driven to change the internal volume.

On the other hand, the air chamber 8, which communicates with the sealed chamber 8 through an air pipe 10, is formed at a position facing the wick 2 attached to the wick container 1. The air chamber 8 may be specially constructed, or may be installed in an existing oil tank. 11, the storage chamber for the lead up/down mechanism 5, and the oil sump chamber 12 at the time of overturning may be used.

[Explanation of action]

When the wick 2 protruding from the burner 3 is ignited, the combustion heat promotes vaporization and combustion of oil from the wick, and the burner 3 shifts to a stable combustion state. The amount of combustion is controlled and the fire is extinguished by moving the wick 2 up and down and operating the fuel valve.

A closed chamber 8 with a constant volume, which is provided near the burner 3 and facing the combustion section, is heated by the heat of the combustion section of the burner 3, and the air becomes less dense and is substantially inside the closed chamber 8. The amount of air that can be stored in the wick is reduced, and the air that cannot be stored is pushed out from the air pipe 10 into the air chamber 9, flows out from the vicinity of the wick 2, and is used for combustion. When the oil burner is in use, the sealed chamber 8 contains a very small amount of air.

When the oil burner is extinguished, the sealed room 8
heating stops, the sealed chamber 8 rapidly recovers the amount of air it can accommodate, and air near the wick 2 is sucked through the air chamber 9. The amount of air sucked into the sealed chamber 8 is strongest immediately after the fire is extinguished, and suction continues until the sealed chamber 8 is cooled down. In addition, the air sucked in immediately after extinguishing the fire contains a large amount of unburned gas, and this unburned gas condenses as the sealed chamber 8 cools, so the volume reduction due to condensation is added to the suctionable air amount. The total amount of gas sucked over a long period of time is greater than the volume of the sealed chamber 8.

In addition, although the suction flow rate is slowed down, the suction of unburned gas near the wick 2 continues until the sealed chamber 8 is cooled, and the unburned gas that causes the bad odor does not flow to the combustion section of the burner, resulting in a bad odor prevention effect.

Furthermore, even if condensation from unburned gas is retained in the sealed chamber 8, when the sealed chamber 8 becomes dry-fired the next time the oil combustor is used, the condensation will turn into unburned gas and flow to the burner 3 via the air chamber 9. There are no particular problems as the fuel is sent and combusted.

Another embodiment, shown in FIG. 3, has a configuration in which the sealed chamber 8 is a variable volume chamber, and the sealed chamber 8 is linked with a temperature-sensitive deformable member 13 installed opposite the combustion part of the burner 3. When receiving the combustion heat of 3, the temperature-sensitive deformable member 13 contracts the volume of the sealed chamber 8 to cope with combustion. Furthermore, when heat radiation from the combustion part of the burner 3 is stopped due to extinguishing operation, the temperature-sensitive deformable member 13 is moved to the closed chamber 8.
is driven to expand the internal volume, and at this time, unburned gas near the wick 2 is sucked into the sealed chamber 8 via the air chamber 9, thereby preventing the generation of bad odors.

[Explanation of Examples]

1 is a core container, 2 is a core attached to the core container 1,
3 is a burner, the wick 2 is made to protrude to the burner 3, and the oil sucked into the wick 2 is supplied to the burner 3. 4 is a fire extinguishing system, which closes a wick up/down mechanism 5 using a rack and pinion gear, a shutting mechanism 6 using a fire extinguishing board extending between the wick 2 and the burner 3, and a pipe line that supplies oil to the wick 2. It consists of an oil cutoff mechanism using an on-off valve. 8 is a sealed chamber provided near the burner 3; 9 is an air chamber provided overlooking the core 2 of the core container 1; and 10 is an air pipe that communicates the sealed chamber 8 and the air chamber 9.

As an example of the air chamber 9, it may be the upper space of an oil tank 11 that supplies oil to the wick 2 as shown in FIG. It may be a containment room. Furthermore, as shown in FIG. 1, the oil combustor is equipped with an oil sump chamber 12 in advance to prevent the oil sucked into the wick 2 and the oil in the oil tank 11 from immediately flowing from the wick container 2 to the burner 3 when the wick falls. The existing space may be used as the air chamber 9.

As an example of the sealed chamber 8, if the internal volume is a fixed volume chamber of 2000 ^cm3 , the combustion part of the burner 3
is heated and the temperature in sealed chamber 8 rises by 270℃,
^2000cm3 air increases volume to about ^4000cm3 , about 2000cm3
^cm3 of air is expelled from the closed chamber. This amount of air is the amount of air that can be sucked into the closed room 8 after extinguishing the fire, and approximately ^600cm3 can be suctioned sufficiently within about 1 minute after extinguishing the fire.
On the other hand, when the sealed chamber 8 with this performance is attached to the air chamber 9 and unburned gas is sucked together with air, the unburned gas condenses inside the sealed chamber 8, so the amount of gas that can be sucked becomes even larger. It is something.

In the embodiment shown in FIG. 3, reference numeral 13 is a temperature-sensitive deformable member attached opposite to the combustion section of the burner 3, and its tip portion moves according to the amount of heat released from the combustion section of the burner 3. The sealed chamber 8, which is linked to the movable tip of the temperature-sensitive deformable member 13, is composed of a chamber with a variable volume. aspirate.

7 is a fuel cutoff valve, and 14 is a combustion adjustment knob. The fuel cutoff valve 7 is operated by the combustion adjustment knob 14, and constitutes the fire extinguishing device 4. 15 is a cartridge oil tank.

〔Effect of the invention〕

As described above, in this invention, due to the structure in which the sealed chamber is installed, almost no unburned gas escapes from the appliance after the fire has been extinguished, and a bad odor after the fire has been extinguished can be prevented.
In addition, as a structure to prevent bad odors, the suction continues for a long time without using any external energy such as a battery-powered motor, and the sealed chamber operates according to the combustion state to ensure that the area near the wick is Unburnt gas could be inhaled. Further, while conventional unburnt gas suction systems require an interlocking mechanism for ignition/extinguishing operations, the present invention does not require an interlocking mechanism. Therefore, since there are no moving parts, it is difficult to break down and is easy to manufacture.Moreover, it always operates whenever an oil combustor is used, making it possible to reliably remove the odor during fire extinguishing, making it a very practical invention.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part of this invention, and FIGS. 2 and 3 are sectional views of main parts of other embodiments. 1... Core container, 2... Core, 3... Burner, 4
... Fire extinguishing device, 5 ... Core up and down mechanism, 6 ... Shutting mechanism, 8 ... Sealed room, 9 ... Air chamber, 10 ... Air pipe, 11 ... Oil tank, 12 ... Oil sump room,
13...Temperature-sensitive deformable member.

Claims (1)

[Scope of Claims] 1. In an oil burner having a fire extinguishing device 4 such as a closing mechanism 6 and a wick up/down mechanism 5, the wick 2 attached to the wick container 1 is made to protrude from the wick container 1 to the burner 3. An air chamber 9 is provided that looks into the core 2 of the core container 1, and is installed near the burner 3.
A sealed chamber 8 is provided in which the amount of air heated by the combustion heat of the burner 3 can be varied depending on the combustion state.
An oil burner characterized in that gas near the wick 2 is sucked into a sealed chamber 8 when extinguishing a fire. 2. The oil combustor according to claim 1, wherein a sealed chamber 8 having a fixed volume is installed opposite the combustion section of the burner 3, and the sealed chamber 8 is heated and cooled during combustion and extinguishing. 3 Temperature-sensitive deformable member 1 facing the combustion part of burner 3
3. The oil combustor according to claim 1, wherein a variable volume sealed chamber 8 and a temperature-sensitive deformable member 13 are linked, and the temperature-sensitive deformable member 13 changes the volume of the sealed chamber 8. 4. The oil combustor according to claim 1, wherein the air chamber 9 is an oil tank 11. 5. The oil combustor according to claim 1, wherein the air chamber 9 is a wick up/down mechanism 5 accommodation chamber. 6. The oil combustor according to claim 1, wherein the air chamber 9 is an oil sump chamber 12 in case of overturning.